ArticleBMC medicine2021
A follow-up study shows that recovered patients with re-positive PCR test in Wuhan may not be infectious.
Article in BMC medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.
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Who cites it
19 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- The prevalence of adaptive immunity to COVID-19 and reinfection after recovery - a comprehensive systematic review and meta-analysis.Pathogens and global health · 2022Pooled it
- Pooled it
- Exploring the oncogenic potential of SARS-CoV-2 in the gastrointestinal tract.World journal of gastroenterology · 2025Review
- Leveraging Large Language Models for Infectious Disease Surveillance-Using a Web Service for Monitoring COVID-19 Patterns From Self-Reporting Tweets: Content Analysis.Journal of medical Internet research · 2025Article
- Ultrasensitive detection of intact SARS-CoV-2 particles in complex biofluids using microfluidic affinity capture.Science advances · 2025Article
- Clinical characteristics and prediction model of re-positive nucleic acid tests among Omicron infections by machine learning: a real-world study of 35,488 cases.BMC infectious diseases · 2024Article
- Epidemiological contemplation for a currently pragmatic COVID-19 health passport: a perspective.Frontiers in public health · 2024Review
- Characteristics of patients with SARS-COV-2 PCR re-positivity after recovering from COVID-19.Epidemiology and infection · 2023Article
- Clinical characteristics and risks of the convalescent COVID-19 patients with re-detectable positive RNA test: a 430 patients with Omicron infected cross-sectional survey in Tianjin, China.Journal of infection and public health · 2022Article
- Repurposing povidone-iodine to reduce the risk of SARS-CoV-2 infection and transmission: a narrative review.Annals of medicine · 2022Review
- The Capacity of Artificial Intelligence in COVID-19 Response: A Review in Context of COVID-19 Screening and Diagnosis.Diagnostics (Basel, Switzerland) · 2022Review
- Virological and Serological Assessment of US Army Trainees Isolated for Coronavirus Disease 2019.The Journal of infectious diseases · 2022Article
- Ultrafast one-minute electronic detection of SARS-CoV-2 infection by 3CLNature communications · 2022Article
- The Illness Experience of Long COVID Patients: A Qualitative Study Based on the Online Q&A Community Zhihu.International journal of environmental research and public health · 2022Article
- The Short- and Long-Term Clinical, Radiological and Functional Consequences of COVID-19.Archivos de bronconeumologia · 2022Review
- Clinical and Gene Features of SARS-CoV-2-Positive Recurrence in Patients Recovered From COVID-19.Frontiers in molecular biosciences · 2022Article
- Biofilms possibly harbor occult SARS-CoV-2 may explain lung cavity, re-positive and long-term positive results.Frontiers in cellular and infection microbiology · 2022Article
- Comprehensive Survey of Using Machine Learning in the COVID-19 Pandemic.Diagnostics (Basel, Switzerland) · 2021Review
- Validating saliva as a biological sample for cost-effective, rapid and routine screening for SARS-CoV-2.Indian journal of medical microbiologyArticle
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9 authors.
Funding
Abstract
backgroundPrevious studies showed that recovered coronavirus disease 2019 (COVID-19) patients can have a subsequent positive polymerase chain reaction (PCR) test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) after they are discharged from the hospital. Understanding the epidemiological characteristics of recovered COVID-19 patients who have a re-positive test is vital for preventing a second wave of COVID-19.
methodsThis retrospective study analyzed the epidemiological and clinical features of 20,280 COVID-19 patients from multiple centers in Wuhan who had a positive PCR test between December 31, 2019, and August 4, 2020. The RT-PCR test results for 4079 individuals who had close contact with the re-positive cases were also obtained.
resultsIn total, 2466 (12.16%) of the 20,280 patients had a re-positive SARS-CoV-2 PCR test after they were discharged from the hospital, and 4079 individuals had close contact with members of this patient group. All of these 4079 individuals had a negative SARS-CoV-2 PCR test.
conclusionsThis retrospective study in Wuhan analyzed the basic characteristics of recovered COVID-19 patients with re-positive PCR test and found that these cases may not be infectious.
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